Re: the 9 step program

[Iljitsch van Beijnum <iljitsch@muada.com>]

On 27-mei-04, at 9:32, <john.loughney@nokia.com> wrote:

> OK, so your point was:

> > 1. The name or address value as it appears to the user. (FQDN, textual
> > representation of an IPv4 or IPv6 address, port number usually
> > implied.)

This isn't really a point... I was just listing the places where 
names/addresses are used in some way in IP communication. This is one 
of them.

> WRT to Multi6, I think that this should be a non-goal - you seem to
> be pre-supposing that the user may see the name.

Someone has to see something to begin with. After that there can be 
invisible referrals.

> I would imagine we have many possiblities, not restricted to:

> 1) URI, FQDN, etc. <-> multi6 name <-> IP address used (shim layer)
> 2) Multi6 address is in the form of some URI, FQDN, etc. (application 
> level address)
> 3) Multi6 address is in the form of an IP address (something like HIP)

So how does 1 compare to 3? Having a special multi6 name (apart from 
the FQDN) that isn't in the form of an IPv6 address seems like asking 
for trouble to me.

I think the "9 step program" illuminates the difference between 2 and 3:

    Regular IP       multi6=fqdn   multi6=address
1.  s=0, d=FQDNX     unchanged     unchanged
2.   | s=A, d=X      changes req.  unchanged
3.   | s=A, d=X      depends       changes req.
4.   | s=A, d=X      depends       depends
--- i --- n ---   --- t --- r --- a --- n --- s --- i --- t ---
5.   | s=A, d=X      depends       depends
6.   | s=A, d=X      depends       depends
7.   | s=A, d=X      depends       changes req.
8.   | s=A, d=X      changes req.  unchanged
9.  s=FQDNA, d=X     unchanged     unchanged    <-- (firewalling issues)

Referrals:           changes req.  depends

> I'm not sure worry about this point is useful.

I'm not worried.  :-)